I want to use a zingto pod to develop follow-people-or-car function through apm
Yes, you can do that, thanks for informing us. What is exactly is your question here?
I have already implemented this function,zingto pod add MAVLink protocol and theirs windows software support opening this function.
This is the test video:
Drone tracking flight using Ardupilot, based on image locking and MAVLink (youtube.com)